20202442 has 16 divisors (see below), whose sum is σ = 32753952. Its totient is φ = 9290160.

The previous prime is 20202439. The next prime is 20202451. The reversal of 20202442 is 24420202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6717 + ... + 9247.

It is an arithmetic number, because the mean of its divisors is an integer number (2047122).

It is a self-describing number.

Almost surely, 2^20202442 is an apocalyptic number.

20202442 is a deficient number, since it is larger than the sum of its proper divisors (12551510).

20202442 is a wasteful number, since it uses less digits than its factorization.

20202442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2853.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 20202442 is about 4494.7126715731. The cubic root of 20202442 is about 272.3545423515.

Adding to 20202442 its reverse (24420202), we get a palindrome (44622644).

The spelling of 20202442 in words is "twenty million, two hundred two thousand, four hundred forty-two".